如何调用更新程序？

Question

create procedure colupdate (
    @firstname varchar(200),
    @status varchar(200)
)
as 
begin 
    select Firstname,Lastname,status from tbl_Students
    where Firstname=@Firstname
    update tbl_Students
    set status= @status
    where @firstname=Firstname 
end 

我称之为：

execute colupdate 'Vikek','deactivate'

现在我得到＆＃34;零行更新＆＃34;。

我该如何更新？

Answer 1

愿这个人帮你解决

create procedure colupdate (
          @firstname varchar(200),
          @status varchar(200)
)
as 
begin 
    IF EXISTS(select Firstname,Lastname,status from tbl_Students where Firstname=@Firstname)
        update tbl_Students set status= @status where Firstname=@Firstname Else
Print ' data not exist'
    end